Collapsible carton



May 5, 1953 K. T. BUTTERY coLLAPsIBLE CARTON 2 SHEETS-SHEET l Filed Aug.19, 1949 INVENTOR.

May 5, 1953 K. T. BUTTERY coLLAPsIBLE CARTON 2 SHEETS-SHEET 2 Filed Aug.19, 1949 Patented May 5, 1953 UNITED STATES OFFICE CQLLAPSIBLE Kenneth'I'. Battery, Kalamazoo, Mich., assignor "te Sutherland ParierClaritatof,A Keramag, Mich., a corporation of Michigan. ApplicationAugust 19, 1949., Serial No, 11.11.2318,.

This i-irveritien relates te improvements in colfiapsible carter-is orcentaines,

The main objects Qt this invention are;

Fir-st, to provide a collapsible carton or con-` formed. of; parer boardContainer stort. which; is formed; Qi; ari integral bleek, is easily.erected, arid. when ereeted-issiiitab1ei0r a Shit): eine; r deliverycontainer ier relatively heavy materialsseeend. to rrevide e Containerheviiis these advantages in which the Several coasting parte are soairaneed that they Serve t0, tirate sie@ serrer-t each other.

Qbieets reietine te details arid economies of the invention will appeartrom the description te fellow. The invention is defined and peinte@eutinthe ClaimsY u A preferred embodiment ci the invention is 11.-ieetratee in the eccome-.arising erewine, in which:

Fig. l is a perspective view of the carton eine tueries my invention. inerected position with the topflaps in upright. position.

Fig. 2- is a fragmentary perspective View 1llus trating certain of thesteps in the erection of the carton.l

Fig. 3 is a fragmentary longitudinal section illustrating additionalsteps in the erection of the carton.

Fig. 4 is an enlarged fragmentary section on a line corresponding toline ltof Fig. 1 Fig. 5 is a plan View of the carton in the flat orcomplete knockdovvn. v'.lig. 6 is a plan View of the cover in the 'lat'.

Fig. 7 is a perspective view of the carton With the cover applied.

Fig. 8 is a fragmentary View in section on line t-tot Fis. 7E

Fig. 9 is'a fragmentary sectional View on a line corresponding to line 99 of Fig. '7.

The carton or container of this invention is primarily designed forshipping or for use with relatively heavy materials and at the same timemay be formed of a medium gauge of paper board stock. The structure inthe embodiment illustrated formed of an integral blank comprises abottom I, side walls 2, 2 hingedly connected to the bottom at 3, 3, andend walls designated generally by the numeral 4 comprising outer endWall members 5, 5 which are hingedly connected to the ends of the bottomat 6, 6, and inner end Wall members which are hingedly connected to theupper edges of the outer end Wall members at 8, 8.

The side walls are provided with corner flaps 9 hingedly connectedthereto at l). These corner aps are adapted to be folded inwardly uponthe inner Sides O f. the iiiterv eed: veli: members eed.. the iiiiiei:@ed veli. members are ieldsfi over the @einer 11ers, .Sii porti..ieleiiqii there@ 'I he irriterend vvall members arev` pr vided withtonguesI El Von their swinging edges iengageal'olfe with the slits t2formed at the juncture of the outer end" wall? members arid the bottom,"the slits-being desirably of lll-shape so that the resulting tongue-li`reportions swing outwardly to open the slits for the' tongues Il. 'theinner end wall members are 'provided 'with inner side Wall extensions 13 hinge'dlysecured' thereto at it and adapted to fold againstlthe innersides ofthe side Walls` when the cartonis erected, as is clearly sho-wnFig. l..

These inner side. Wall members i132, le are desitably of the height ot'the side: wa'lls and rest upon the bottoni in supported relation theretowith their upperedgeszin the planesloi the upper edges ot they side`Walls. The inner. end walls serve to brace the side walls against inwardcollapsing anda the corner flapsv which desirably rest on. they bottomalso serve-tof that end. The inner side wall; niemuers. are desirabl-y.of substantial length", as is illustrateur, so,y that'they errectiveiyreinrlorce the s1oe;wallsf1andi particularly the cor- 11ers oi thecontainer..

'TheV sioe` walls, are providedl with top, flaps 5 hingeollyV connectedthereto at te to bev folded inwardly over. and, in. retainingV relationto the innert side wail members. The cover lit is protiued'. withtracking; naps, 1 8.l hingedly connected thereto at. til, the coverbeing arranged over the intcrried top. manges ttt and the. trucking.naps le inserted between the ends. of` the top laps and the. end. Wal1s,as, clearlyl shown: in. rigs. t', and Si ley this arrangement the coveris very errectively supported and retained.

The side walls in tue embodiment illustrated are provided withVentilating openings zo and the inner side Wall members I3 are providedwith Ventilating openings 2| which register with the openings 2d whenthe box is fully erected. bor certaln products these Ventilatingopenings are not necessary.

The cartons or containers of this invention are particularly welladapted Ior relatively heavy duty, although desirable for a Wide rangeof uses. I have illustrated and described my invention in a highlypractical embodiment thereof. I have not attempted to illustrate ordescribe other adaptations which I contemplate as it is believed thisdisclosure will enable those skllled 1n the art to embody or adapt myinvention as may be desired.

Having thus described my invention. what I claim as new and desire tosecure by Letters Patent is:

1. A carton formed of an integral blank and comprising a bottom, sidewalls hingedly connected to the bottom, end walls comprising outer endwall members hingedly connected to the bottom and inner end wall membershingedly connected to the outer ends of the outer end wall members, theside walls having corner aps hingedly connected to the ends thereof andadapted to be disposed on the inner sides of the outer end wall memberswhen the carton is erected, the inner end wall members being foldedinwardly over the corner flaps in retaining relation thereto with theirends in supporting relation to the side walls, said inner end wallmembers having inner side wall members of a height corresponding to theheight of the side walls hingedly connected t their ends and positionedagainst the inner sides of the side walls in supported relation to thebottom, the inner end wall members being provided with locking tongueson their outer edges, there being slits at the juncture of the outer endwall members with the bottom retainingly receiving said tongues when theboX is erected, the said side walls being provided with cover supportingtop aps on their upper edges foldable inwardly over the upper edgesofthe said inner side wall members and in supporting engagement Withsaid upper edges, and a cover adapted to be positioned over said top apsin support relation thereto and provided with end flaps inserted betweenthe ends of the top flaps and said inner end Wall members with the sideedges of the cover end flaps in supporting engagement with the saidinner side wall members, said side wallsv and inner side wall membersbeing provided with ventilating openings which register when thecontainer is erected.

2. A carton formed of an integral blank and comprising a bottom, sidewalls hingedly connected to the bottom, end walls comprising outer endwall members hingedly connected to the bottom and inner end wall membershingedly connected to the outer ends ofthe outer end wall members, thelside walls havingcorner flaps hingedly connected to the ends thereof andadapted to be disposed on the inner sides of the outer end wall memberswhen the carton is erected, the inner end wall members being foldedinwardly over the corner iiaps in retaining relation thereto with theirends in supporting relation to the side walls, said inner end Wallmembers having inner side wall members of a height corresponding to theheight of the side walls hingedly connected to their ends and positionedagainst the inner sides of the side walls in supported relation to thebottom, the said side walls being provided with cover supporting topflaps on their upper edges foldable inwardly over the upper edges of thesaid inner side wall members, and a cover adapted to be positioned oversaid top flaps in supported relation thereto and provided with end apsinserted between the ends of the top aps and said inner end wall memberswith the side edges of the cover end aps in supporting engagement withthe said inner side wall members, said side walls and inner side wallmembers being provided with Ventilating openings which register when thecontainer is erected.

3. A carton comprising a bottom, side walls hingedly connected to thebottom, end walls comprising outer wall members hingedly connected tothe bottom and inner end Wall members extending from the outer ends ofthe outer end wall members, the side Walls having corner flaps at theirends disposed on the inner sides of the outer end wall members when thecarton is erected, the inner end wall members being folded inwardly overthe corner flaps in retaining relation thereto with their ends insupporting relation to the side Walls, said inner end Wall membershaving inner side wall members on their ends positioned against theinner sides of the side walls with their bottom edges in supportedengagement with the bottom, said inner side wall members being of aheight corresponding approximately to the height of the side walls, theside walls being provided with inwardly foldable cover supporting topiiaps on their upper edges, and a cover adapted to be positioned uponsaid top flaps and provided with end flaps adapted to be insertedbetween the ends of the top iiaps and said inner end wall members withthe end edges of the top flaps in supporting engagement with the innerside wall members.

KENNETH T. BUTTERY.

References Cited in the iile of this patent UNITED STATES PATENTS NumberName Date 882,688 J anicke Mar. 24, 1908 2,179,555 Kelis Nov. 14, 19392,195,070 Backert Mar. 26, 1940 2,199,204 Levkoff Apr. 30, 19402,295,141 Van 'Winger Sept. 3, 1942 2,468,951 Barter May 3, 1949 FOREIGNPATENTS Number Country Date 453,663 Great Britain Sept. 16, 1936

